Positive experience overall: a details and penetrating phone interview with a software developer (standard technical questions, brain quizzes, probabilities), a programming challenge to do in a couple of days followed by an on-site extended interview with four different interviewers (including the manager for the position). Interview focused mainly on core programming skills plus raw intellectual capacities. This means no "technology" question (what does API X? what is Framework Y?). Nice, intelligent people and it seemed a great environment to work in.

Probabilities questions involved throwing dice (NDA prevents from giving specifics).

Find errors in code - a wide range of errors from bad naming to wrong brace or if/else matching (NDA prevents from giving specifics).